Covers aspects of the history of both Leiston Abbey and Butley Priory but is chiefly concerned with Leiston as the better documented and less investigated of the two. Butley Priory was a house of Augustinian canons, Leiston Abbey a foundation for Premonstratensian canons. This volume is largely an edition of the Leiston cartulary and although the introduction covers aspects of the history of both houses, it is chiefly concerned with Leiston as the better documented and less investigated of the two.